code: def test_DEFAULT_SESSION_ID() -> None:
      assert bcs.DEFAULT_SESSION_ID == "default"
  
file_path: bokeh/tests/unit/bokeh/client/test_session__client.py
imports: from __future__ import annotations
  import pytest
  from unittest.mock import MagicMock, patch
  import bokeh.client.session
label_desc: Use image node_id 1 for calling a global function with example usage: test_DEFAULT_SESSION_ID() without return types